If you mean the flashback to the crash where young brad Pitt gets hurt, I think it's Martin Donnelly's footage / crash they were inspired by, not Lauda's, that was more of a "burn" situation and much earlier... Anyway, no matter. It was not a bad movie overall, but we fanatics were not the target anyway...
https://www.bbc.com/sport/formula1/articles/c4g88xzemv1o